用户约束下的三维动画模型序列一致性分割

User-constrained consistent segmentation of 3D animated meshes

针对三维动画模型分割不一致问题,提出基于三维数据对齐技术的三维动画模型交互式分割算法,得到层次结构一致的分割结果.算法首先对首帧进行交互标记;然后通过主向量分析完成三维模型不同帧之间的对齐,自动把用户标记映射到其他模型;最后以方向夹角为基础,设计图割算法,根据模型关节所具有的曲率特征进行边界优化,得到满意的分割结果.实验结果表明,算法针对人造动画模型序列和多视图三维重建动画序列都能够得到一致性分割结果,验证了算法的有效性.最后和已有典型分割方法进行比较分析,可以发现算法能够有效地提高分割质量.

Existing approaches will cause inconsistent segmentations for 3D animated meshes. To address this issue, we propose an algorithm of interactive segmenting 3D animated meshes based on 3D data correspondence and it can obtain highly consistent segmentations with user＇s interactions. In this algorithm, the first frame should be annotated interactively. Then the principal component analysis is used to align different frames of animation. Then user＇s mark can be automatically mapped to other models. Finally, based on directional angle, the cut algorithm is designed and the boundary is optimized according to the curvature of the joint mode until the segmenting results are satisfied. Experimental results show that the algorithm can effectively segment artificial 3D animation and multi-view reconstruction animation. Furthermore, the proposed algorithm can effectively improve the segmenting quality better than the existing algorithms.